A=4
Just divide 5 on both sides :-)
Answer:
The answers are (x+2)(x+3)=0 is the factored form of the equation and The solutions to the equation are x=2 and x=3
Step-by-step explanation:
You would need to add 7x to both sides.
Answer:
See explanation
Step-by-step explanation:
You have to graph the system of inequalities presented as

Part A:
1. Draw a dotted line
(dotted because the sign < is without notion "or equal to"). Select one of two regions by substituting the coordinates of origin into inequality:

Since this inequlity is false, the origin doesn't belong to the shaded region, so you have to shade that part which doesn't contain origin (red part in attached diagram).
2. Draw a solid line
(solid because the sign ≥ is with notion "or equal to"). Select one of two regions by substituting the coordinates of origin into inequality:

Since this inequlity is true, the origin belongs to the shaded region, so you have to shade that part which contains origin (blue part in attached diagram).
The intersection of these two regions is the solution area.
Part B:
Plot point (-2,-2). Since this point doesn't belong to the solution area, this is not a solution of the system of two inequalities. You can check it mathematically - substitute x=-2 and y=-2 into the system:

Both inequalities are false, so (-2,-2) doesn't belong to the solution area.
Answer:
15=a
Step-by-step explanation:
how I got this is because a triangle is equal to 180 so you have to add all of the things together then you get 12a=180 the reason why I got this is because if you add it so 6x+3a-1+3a+1 so you add common terms then you will equal to 12a then you divide it on both sides so then you equal to 15